void PurgeDirectory(string targetDirectory, Predicate <IFileInfo> include, DeletionOptions options, CancellationToken cancel, bool includeTarget = false)
{
if (!DirectoryExists(targetDirectory))
{
return;
}
foreach (var file in EnumerateFiles(targetDirectory))
{
cancel.ThrowIfCancellationRequested();
if (include != null)
{
var info = new FileInfoAdapter(new FileInfo(file));
if (!include(info))
{
continue;
}
}
DeleteFile(file, options);
}
foreach (var directory in EnumerateDirectories(targetDirectory))
{
cancel.ThrowIfCancellationRequested();
var info = new DirectoryInfo(directory);
if ((info.Attributes & FileAttributes.ReparsePoint) == FileAttributes.ReparsePoint)
{
Directory.Delete(directory);
}
else
{
PurgeDirectory(directory, include, options, cancel, includeTarget: true);
}
}
if (includeTarget && DirectoryIsEmpty(targetDirectory))
{
DeleteDirectory(targetDirectory, options);
}
}
public void DeleteFile(string path, DeletionOptions options)
{
options = options ?? DeletionOptions.TryThreeTimes;
if (string.IsNullOrWhiteSpace(path))
{
return;
}
var firstAttemptFailed = false;
for (var i = 0; i < options.RetryAttempts; i++)
{
try
{
if (File.Exists(path))
{
if (firstAttemptFailed)
{
File.SetAttributes(path, FileAttributes.Normal);
}
File.Delete(path);
}
}
catch
{
Thread.Sleep(options.SleepBetweenAttemptsMilliseconds);
firstAttemptFailed = true;
if (i == options.RetryAttempts - 1)
{
if (options.ThrowOnFailure)
{
throw;
}
break;
}
}
}
}
public void DeleteDirectory(string path, DeletionOptions options)
{
options = options ?? DeletionOptions.TryThreeTimes;
if (string.IsNullOrWhiteSpace(path))
{
return;
}
for (var i = 0; i < options.RetryAttempts; i++)
{
try
{
if (Directory.Exists(path))
{
var dir = new DirectoryInfo(path);
dir.Attributes = dir.Attributes & ~FileAttributes.ReadOnly;
dir.Delete(true);
}
}
catch
{
Thread.Sleep(options.SleepBetweenAttemptsMilliseconds);
if (i == options.RetryAttempts - 1)
{
if (options.ThrowOnFailure)
{
throw;
}
break;
}
}
}
}
public void PurgeDirectory(string targetDirectory, Predicate <IFileInfo> include, DeletionOptions options)
{
PurgeDirectory(targetDirectory, include, options, CancellationToken.None);
}
public void PurgeDirectory(string targetDirectory, DeletionOptions options, CancellationToken cancel)
{
PurgeDirectory(targetDirectory, fi => true, options, cancel);
}
public void PurgeDirectory(string targetDirectory, DeletionOptions options)
{
PurgeDirectory(targetDirectory, fi => true, options);
}